Peel the bananas and cut them into slices. - Place one banana slice into each mini cupcake liner. If using regular size liners, place two banana slices in each.
- Top each banana slice with a dollop of peanut butter. Use enough to cover the top of the banana slice but not too much that it overflows.
- Place the prepared banana bites in a single layer on a baking sheet or tray.
- Freeze for 1-2 hours, or until the peanut butter is firm and the banana slices are frozen.
- Remove from the freezer and enjoy immediately.
Store any leftovers in an airtight container in the freezer.